Portsmouth turbo replacement
Discussion
I've been scratching my head on this one -
No oil burnt , coolant normal , performance and fuel economy unchanged .
Whistle at just above idle and under load . It has always been a whistler but last week it became noticeable above 25 mph all the time and a high pitch whine appeared that was never there before .
I've undone the pipes to and from the inter cooler and turbo in turn to try and isolate any air leak but the whistle remains
It's done a gentle 57 k - 40 k of which in the last 5 years by me . Oil changed once a year and always simmered and treated gently .
No oil burnt , coolant normal , performance and fuel economy unchanged .
Whistle at just above idle and under load . It has always been a whistler but last week it became noticeable above 25 mph all the time and a high pitch whine appeared that was never there before .
I've undone the pipes to and from the inter cooler and turbo in turn to try and isolate any air leak but the whistle remains
It's done a gentle 57 k - 40 k of which in the last 5 years by me . Oil changed once a year and always simmered and treated gently .
Back to the top said:
I've been scratching my head on this one -
No oil burnt , coolant normal , performance and fuel economy unchanged .
Whistle at just above idle and under load . It has always been a whistler but last week it became noticeable above 25 mph all the time and a high pitch whine appeared that was never there before .
I've undone the pipes to and from the inter cooler and turbo in turn to try and isolate any air leak but the whistle remains
It's done a gentle 57 k - 40 k of which in the last 5 years by me . Oil changed once a year and always simmered and treated gently .
I don't know the engine in detail but IIRC there are some pipes sealed by o rings, be worth checking them.No oil burnt , coolant normal , performance and fuel economy unchanged .
Whistle at just above idle and under load . It has always been a whistler but last week it became noticeable above 25 mph all the time and a high pitch whine appeared that was never there before .
I've undone the pipes to and from the inter cooler and turbo in turn to try and isolate any air leak but the whistle remains
It's done a gentle 57 k - 40 k of which in the last 5 years by me . Oil changed once a year and always simmered and treated gently .
Have you checked all vacuum hoses too ?
You could ask over at http://www.astraownersnetwork.co.uk/forum.php, pretty helpful chaps over there who know the engine well.
Turbos do whistle , some say its because there out of balance or sometime if you have a aftermarket exhaust or air filter this has less baffling in there you can hear it then.
My turbo on my van has been doing this for 70+ plus no burning oil or loss in boost.
If its not broke leave it alone.....
While you are maybe trying to pre-empt something...it may just be a case of wait and see.
If the car is driving fine, performing fine and there are no real symptoms of a problem....it's kind of hard to start messing, which could lead to you causing another problem.
Some boost pipes do use an o-ring type setup. Basically if you see a joint of some description with no external hose clamp, then good chance it uses an o-ring inside.
Some garages may have a smoke machine which is intended for finding leaks, if you can track one down.
If the car is driving fine, performing fine and there are no real symptoms of a problem....it's kind of hard to start messing, which could lead to you causing another problem.
Some boost pipes do use an o-ring type setup. Basically if you see a joint of some description with no external hose clamp, then good chance it uses an o-ring inside.
Some garages may have a smoke machine which is intended for finding leaks, if you can track one down.
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